Acoustic and electric insulator



(No Model.)

W. J. BOWEN.

ACOUSTIC AND ELECTRIC INSULATOR. NO. 286,681. Patented Oct. 16, 1883.

WITNESSES NVENTOR William J: Bowen. W2 afa lw f By has .Atforney Lil UNITED STATES PATENT OFFICE.

\VILLIAM J. BOVEN, OF NORVALK, OHIO, ASSIGNOR TO HIMSELF, T. T. KEOKELER, OF CINCINNATI, 'OHIO, AND Z. O. THIVING, OF MARSHALL,

MICHIGAN.

ACOUSTIC AND ELECTRIC lNSULATOR.

SPECIFICATION forming part of Letters Patent No. 286,681, dated October 16, 1883.

Application filed August 20, 1883. (X0 model.)

To (0Z2 whom it mag concern:

Be it known that l, XVILLLUT J. BOWEN, a citizen of the United States, residing at Non walk, in the county of Huron and State of Ohio, have invented certain new and useful Improvements in Combined Acoustic and Electric Insulators; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

The present invention relates to improvements in devices for suspending and insulat ing electric conductors and for preventing the vibrations incident to air-strung wires being communicated to their support, the details whereof will be hereinafter fully set forth.

In the accompanying drawings, Figure 1 is a sectional view oi my improved acoustic electric insulator. l ig. 2 is a view in elevation thereof, the cap (i being substituted for the cars 13 and wires O (l of Fig. 1. Fig. .3 is a view in elevation, showing the insulator provided with a bracket for attaching same to buildings and walls generally. Fig. 4 is an inverted plan view, partly in section.

Similar letters denote like parts.

A represents the body of the insulator, which is in the form of a cup, tapering inter; nally toward the bottom, and may be of galvanized east-iron, porcelain, or any other suit able material. I t should be of about uniform internal diameter, open at the top, and pro 'vided with an internal flange, a, at its lower portion. Its upper edge is extended into or provided with. the ears B B, in which are secured wires 0 C, by means of which thedevice may be suspended by a wire or cord, I), connected by button E with cross-arm 11. The

cap G, also made of metal and provided with extension or ear 9, may be fitted over the body A, and be secured thereto in any wellknown manneri'or instance, by means of screws or rivets passing through both cap and bodyand when so secured the insulator can be attached directly to the cross-arm by means or is placed and supported.

of a nail or bolt passing through aperture H therein.

Fig. 3 shows an obvious modification of my device, which consists in providing the body A with a bracket, I, to allow of the device being readily attached to walls, poles, itle in the said body A is placed a cushion, 13, consisting of a yielding or flexible nonconductor-as, for example, .soft rubber, ielt, or kerite. This rests upon and is permanently retained in position by the flange a. Through the cushion B extends a rod, 0, that terminates in a hook, 0, within which the conduct- The rod 0 is provided with suitable head, a, and, when l'ound desirable, a washer, d, may be interposed bctween the head 0 and the cushion B, in order to equalize and distribute the press ure thereon. The rod 0, being considerably removed from the flange u, is prevented from making contact therewith, and is, it will be seen, entirely supported by the elastic nonconductor, through which neither electricity nor the vibrations of the conductor itself can. pass. It therefore constitutes a combined electric and sound insulator, and. is, in addition to ordinary uses. especially adapted to carry the wires of the acoustic telephone.

The internal taper of the cup A renders it easier to put the parts together, si nce a slightly large cushion or inaccurately-inclded cup are compensated .i'or thereby, and when it is de sired to separate the parts the rubber cushion, on account oi the upwardly-increasing diameter of the cup, can be removed and replaced without dilliculty.

Having described my invention, I claim- 1. A combined acoustic and electric insulator, consisting, essentially, of a cup or holder having an open upper and gradually-contracted lower portion and a suitable inwardly-proj eetin g seat or flange at the bottom, and means, substantially as described, for attaching the same to its support, an elastic body placed within said cup and resting against its flange and tapering sides, and a hanger or rod extending through and supported by the elastic body, as set forth.

2. A combined acoustic and electric insulator,cons'isti ng of acuporholder havingan open which the conductor is supported, substanupper and Contracted lower portion, a cap setially as described. 7 10 cured thereto, and provided with an ear hav- In testimony whereof I aifix my signature in ing aperture therein for attaching the same presence of two witnesses. 5 to its support, an elastic cushion Within said WILLIAM J. BOYVEN. cup, and a hanger or rod passing through said v \Vitnesses:

cushion and extending from the body of the G. V. BUTLER, insulator, and provided with a hook within V. H. HUSTED.

I i A Correction in Letters Patent No. 286,681.

upon the application of William Written and printed Z. O. Thiv printed Z. 0. Timing,-

Patent to make it conform theret Signed, conntersigned, and sea [SEAL] Oountersigned:

BENJ. BUTlERWORTH,

It is hereby certified that in Lett ers Patent No. 286,681, granted October 16, 1883,

J. Bowen, of Norwalk, Ohio, for an improvement in Acoustic and Electric Insulators, the name of one of the ing, that said na me should hov nssig'nees Was erroneously e been written and and that the proper correction has been made in the files and read in the Letters led this 27th day of May, A. n. 1884.

Oomnu'ssimwr of Patents.

. JOSLYN,

l 1 I] f It is hereby certified that in Letters Patent N 0. 286,681, granted October 16, 1883, 0o a N I upon the application of William J. Bowen, of N or talk, Ohio, for an improvement in o" Acoustic and Electric Insulators the name of one of the assignees was erroneously Z Writtenand printed Z. G. Thiving; that sald name should have been Written and 5 printed Z. 0. Tkwi ng; and that the proper correction has been made in the files and D I records pertaining to the case in the Patent Offiee, and should be read in the Letters s? l Patent to make it conform thereto.

i Signed, countersigned, and sealed this 27th day of May, A. D. 1884.

c l [SEAL] M. L. JOSLYN,

"- I Acting Secretary of the Dzterior. l Oonntersigned:

l BENJ. BUTTERWORTH, r

$ Conznu'ssz'oner of Patents. 

